Explore how your immune system’s vast network of cells, tissues, and organs coordinate your body’s defenses against bacteria, viruses and toxins. — The immune system is a vast network of cells, tissues, and organs that coordinate your body’s defenses against…
View full lesson: The biggest kidney stone on record weighed more than a kilogram and was 17 centimeters in diameter. The patient didn’t actually swallow a stone the size of a coconut; kidney stones form inside the body. So how…
View full lesson: The things we eat and drink on a daily basis can impact our health in big ways. Too many carbohydrates, for instance, can lead to insulin resistance, which is a major contributor to cardiovascular disease and Type…
View full lesson: Your body produces more than a liter of mucus every day, and when you’re sick, it can be hard to miss. But what exactly is mucus? And what does it do, besides making you miserable? Katharina Ribbeck…
Explore how bacteria become resistant to antibiotics and turn into superbugs, and what scientists are doing to stop it. — Right now, you are inhabited by trillions of microorganisms. Many of these bacteria are harmless (or even helpful!), but there…